All you have to do is to unplug the chassis harness on your vehicle and compare the connector with the ACE one and see if there are wires in the fascia side to the wired pins for the ACE harness then search behind the glovebox for free ECU plug and the upper accelerometer plug under the front interior lamp

Is there just one accelerometer? I have an unused connector behind the interior light. I read somewhere that there’s one under the drivers sill.
 
I don’t suppose you can get a photo of exactly where the bottom one is can you please?
Is it above the valve block?
 
It's described in the WSM:
Accelerometers
Two accelerometers are used for the ACE system. The upper accelerometer is mounted on a bracket, behind the
headlining adjacent to the rear view mirror and the sunroof ECU. The lower accelerometer is located on a bracket on
the inner sill panel under the RH front floor.

ACE lower accelmeter.jpg
 
Thanks. That lower one looks familiar, I would have unplugged it when I took the body off. I wish I had thought about keeping the ACE from it before I scrapped the body!
 

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